private void button1_Click(object sender, System.EventArgs e)
        {
            Socket[] socketArray=new Socket[100];
            for(int i=0;i<socketArray.Length;i++)
            {
               socketArray[i]=new Socket(AddressFamily.InterNetwork,SocketType.Stream,
                ProtocolType.Tcp);
               socketArray[i].Bind(new IPEndPoint(IPAddress.Parse("127.0.0.1"),5000+i));
               socketArray[i].Listen(5);
            }
        }